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serious rearend clicking

This is a discussion on serious rearend clicking within the Drivetrain forums, part of the LSx Technical Help Section category; Im new to this whole thing every time i take a left or right turn in or out of gear ...

  1. #1
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    peweter
    01 t/a

    serious rearend clicking

    Im new to this whole thing every time i take a left or right turn in or out of gear my rearend makes this loud clicking noise even sometimes when im coming to a stop real bad when just kinda of swirving right to left recently had the fluid changed still clicking please help THANKS

  2. #2
    Junior Member alamantia's Avatar
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    1995 Z28 & 2002 Z28

    my driveshaft rattles when the car is coasting, if thats what you are talking about its normal.

  3. #3
    maroonZ
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    GM limited slip additive

    Sounds like you need to add GM limited slip additive

    I am getting ready to change the pinion seal and change the oil. Royal Purple claims I don't need the additive with their oil but I figure better safe than sorry.

    Mine is making the same sort of noises as yours. I will know next week. I'll send you an update

  4. #4
    maroonZ
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    Question

    Just got the pinion seal done and gear oil changed.
    85 w 140 Royal purple and Gm additive still got the clicking noise not sure this time.

    Afriend mentioned trailing arm bushings might be the problem but I can't figure that one.

  5. #5
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    depending on how you define clicking, it can be the axle bearings... which are bad on mine.. you can hear a bit of rattling when you coast, or make turns...

  6. #6
    maroonZ
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    I am thinking you may be correct.

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    A local shop quoted me $550 parts and labor on new axles/bearings...

    $1350 total for everything rear-end-related, except the actual casing...

  8. #8
    Senior Member illcul8troffcr's Avatar
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    Theres obviously an issue with these rear ends .. I had problems with mine making noises .. took it back still under warranty and they added that additive .. I have an auburn torsen differential .. they said its basically like having a truck gear in it and needs the thickening stuff to keep it from clanging or making any noise.. about ten thousand miles later it started again.. replaced the seal which was leaking .. and refilled.. stopped it for a while .. not 2 thousand miles out of warranty and its doing it again.. piece of shit.. I baby this car .. very seldom am I hard on it .. it doesnt effect the performance .. but who wants a fuckin 35 thousand dollar sports car thats clicking or clanging when you pass them?
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    Mine sounds like a bunch of rocks clunking around when I let off the gas at low rpms and when coasting to a stop. I had the rear completely rebuilt under warranty twice in just 6 months. The last rebuilt was over 26k miles ago and hasn't gotten worse so I just live with it.

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    Quote Originally Posted by occamaroz
    Mine sounds like a bunch of rocks clunking around when I let off the gas at low rpms and when coasting to a stop. I had the rear completely rebuilt under warranty twice in just 6 months. The last rebuilt was over 26k miles ago and hasn't gotten worse so I just live with it.
    that sound you are describing is 99% the axle bearings...

  11. #11
    Last of the Breed Pewter02Formula's Avatar
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    I hear a rapid klunking sound ... not really a clicking sound, but it sounds like someone shaking a plastic bucket with a couple rocks in it. I hear it when I coast around curves and occasionally coasting at 25mph or under. It has never gotten any worse, but I'd hate to think people could hear that when I'm cruising thru town.

    Car is still under warranty for another 18K miles... I think I'll take it to the dealership and have them go over it real well...

  12. #12
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    I have had it since I got my car. From all that I have read, the "box of marbles" sound is normal. It is just how the our differential units work. Mine has never gotten any worse. Now as to your problem being a LOUD CLICKING noise.... I would def have that looked at!

  13. #13
    SUPREME member-oderator oneBADDz's Avatar
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    Quote Originally Posted by Pewter02Formula View Post
    I hear a rapid klunking sound ... not really a clicking sound, but it sounds like someone shaking a plastic bucket with a couple rocks in it. I hear it when I coast around curves and occasionally coasting at 25mph or under. It has never gotten any worse, but I'd hate to think people could hear that when I'm cruising thru town.

    Car is still under warranty for another 18K miles... I think I'll take it to the dealership and have them go over it real well...
    I hope you have a REALLY good dealer. Anyone I know with an f-bod that has taken it to the dealer for the rearend has gotten the run around. They "check it out" repeatedly and claim it's ok until warranty is out, then they magically find the problem and give you a HUGE estimate. My closest friend actually took his in at LEAST 5 times, I stopped counting and they never would fix it. He would argue with them endlessly and they would swear there was nothing wrong with it despite the wretched noise coming from the rear end.

  14. #14
    SUPREME member-oderator oneBADDz's Avatar
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    Quote Originally Posted by rcarr View Post
    I have had it since I got my car. From all that I have read, the "box of marbles" sound is normal. It is just how the our differential units work. Mine has never gotten any worse. Now as to your problem being a LOUD CLICKING noise.... I would def have that looked at!
    I've had two and neither one has had any noise. Any more noise than none is not normal.

  15. #15
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    my axle bearings are about to explode I think... I wonder what the next step is... the grinding gets louder and louder, do the bearings eventually fall out and my rear axel locks up, or what??

    I really need to get this fixed soon.... I probably only have about 3 months of bearings left

  16. #16
    Member Pete Rock98's Avatar
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    It could be the spider gears I suggest you don't dump alot of money on parts and labor into a 10 bolt.Buy a 12 bolt.

  17. #17
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    a complete rebuild, for parts and labor, for everything brand new except the actual casing, it's $1350... the stock rear-end can last easily to 100k miles, (on an automatic,) which mine has... why put in a rear-end that costs at least $2500 in parts alone??

  18. #18
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    Quote Originally Posted by oneBADDz View Post
    I hope you have a REALLY good dealer. Anyone I know with an f-bod that has taken it to the dealer for the rearend has gotten the run around. They "check it out" repeatedly and claim it's ok until warranty is out, then they magically find the problem and give you a HUGE estimate. My closest friend actually took his in at LEAST 5 times, I stopped counting and they never would fix it. He would argue with them endlessly and they would swear there was nothing wrong with it despite the wretched noise coming from the rear end.
    I have a great mechanic who is also very familiar with the car. I'll have him check it out first...

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